Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Maintenance Rights Intangible And Lease Premium, Net (Summary Of Details Of Lease Premiums And Related Accumulated Amortization) (Details)

v3.6.0.2
Maintenance Rights Intangible And Lease Premium, Net (Summary Of Details Of Lease Premiums And Related Accumulated Amortization) (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]    
Gross carrying amount $ 400,000 $ 416,465
Accumulated amortization (82,012) (52,328)
Finite-lived intangible assets 317,988 364,137
Lease Premium [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross carrying amount 94,959 107,140
Accumulated amortization (44,068) (36,413)
Finite-lived intangible assets $ 50,891 $ 70,727